Well, I did not find how to change the resolv.conf in my container (turns out there is no vi

) so I changed it directly on my NAS (set cloudflare DNS instead of freeDNS) and restarted my container, checked the resolv.conf and it was changed

But ... Still no luck with sending the mails.
My container logs are still showing this error :
Code:
thread '<unnamed>' panicked at 'called `Result::unwrap()` on an `Err` value: Io(Custom { kind: Other, error: "failed to lookup address information: Temporary failure in name resolution" })', src/libcore/result.rs:1187:5
For info, I have followed the wiki for the installation of BWRS (almost all in command lines). I can provide all the steps if needed.